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新疆阿尔泰山南缘克兰盆地中的铁木尔特中型铅锌矿床赋存于上志留统—下泥盆统康布铁堡组上亚组第二岩性段,容矿岩石为大理岩、绿泥石英片岩、变钙质粉砂岩、矽卡岩。矿床经历了喷流沉积期、叠加改造期和表生期。喷流沉积期硫化物δ34S值集中于-27.8‰～-16.0‰,峰值为-26.0‰,少量1.7‰～3.4‰,表明硫主要来自细菌还原海水硫酸盐及岩浆活动。氢、氧同位素组成表明,叠加改造期石英和方解石的δD变化于-122‰～-61‰,δ18O变化于9.5‰～10.9‰,δ18O水为-5.8‰～4.8‰,表明叠加改造期成矿流体具有多来源特征,是岩浆水、大气降水和变质水的混合产物。铁木尔特铅锌矿床在成因类型上为VMS型,矿床形成后又经历了叠加改造。
The Tumurd medium-sized lead-zinc deposits in the Kelan basin, located in the southern margin of the Altay Mountains, occur in the second lithology of the Upper Member of the Upper Silurian Formation in the Upper Silurian-Lower Devonian. The ore-hosting rocks are marble, Chlorite quartz schist, calcareous siltstone, skarn. The deposit has experienced jet deposition period, superposition period and epigenetic modification. The δ34S values of sediment from the jet stream concentrated in the range of -27.8 ‰ to -16.0 ‰, with a peak of -26.0 ‰ and a small amount of 1.7 ‰ to 3.4 ‰, indicating that the sulfur mainly came from bacterial reduction of seawater sulfate and magmatic activity. Hydrogen and oxygen isotopic compositions suggest that δD changes of quartz and calcite over the remodeling period range from -122 ‰ to -61 ‰, δ18O from 9.5 ‰ to 10.9 ‰, and δ18O water from -5.8 ‰ to 4.8 ‰, indicating that mineralization during superposition and alteration The fluid has multiple provenance characteristics and is a mixture of magmatic water, atmospheric precipitation and metamorphic water. Tectonic lead-zinc deposit is VMS type on genetic type, and the ore deposit undergoes superposition and transformation after its formation.